Press



l. R. BLAKESLEE.

PRESS. APP L1CATION FILED 1UNE17, 1916."

Patented Dec. 21, 1920.

WI. TNE 656 W from other inventions.

UNITED STATES PATENT OFFICE.

JOHN R. BLAKESLEE, OF CLEVELAND, OHIO, ASSIGNOR TO THE AJAX MANUFAC- TUBING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

PRESS.

' Application filed June 17,

To all whom it may concern:

Be it known that I, JOHN R. BLAKESLEE, a citizen of the United States and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Presses, of which the following'is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it The present improvements relate to a press designed for the manufacture of metal artioles, particular attention having been paid to the balancing or counter-weighting of the main die slide and to im roving the means for operating the same. Iy improved press is not only of simple construction, but h'as'a very smooth and vibrationless operation. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which the principle of theinvention may be used.

7 In said annexed drawings Figure l is a side elevationof a machine embodying my improvements; Fig. 2 1s a plan view of a portion ofthe same; Fig. 3 is a transversesection and planof another portion; and Fig. 4. is a diagramillustrating the disposition of parts and their operation.

The press mechanism proper,'as well as the operating or driving mechanism therefor, is mounted on a substantial bed 1, t being understood that an anvil or lower die member will be also suitably mounted upon such bed, or base at 2, in line with the upper die-carrying member or slide 3, which alone is shown. The latter is held so as to be vertically reciprocable in a slideway 4 formed in a housing 5 of heavy construction firmly held to the machine frame and bed by horizontal and vertical tie-rods 6, as. clearly shown in Figs. 1' and 3.. The die-slide 3,

which is shown in full lines in Fig.1 in its raised position, and in dotted lines in its lowered position, is supported or suspended in the slideway just described by means of two links 7 and 8, pivotally connectedtogether at their adjacent ends, the lower link Specification of Letters Patent.

Patented Dec. 21, 1920. 1916. Serial No. 104,159.

7 being in addition pivotally attached to said slide, and the upper link 8 to a shaft or pin 9 fixedly held in a cap-plate 10 that surmounts and covers the housing 5 (Fig. 1).

To one side of such slideway 4, and incl ningdownwardly away therefrom, is provided a second slideway 11, suitably supported on the machine frame and receiving a reciprocably mounted operating-slide 12. At its upper end slide 12 is connected with the toggle links 7 and 8, which support the d e-slide 3, by meansof two links 13 and 14 pivotally, connected together, as clearly shown 1n Fig. l, thepivotal joint between these two links being in turn connected with one end of a third link or "rather lever 15, the other end-of which is oscillatory about a fixed axis 16. y

As a result of the foregoing construction, reciprocation of the operating slide 12 will obviously tend to straighten out, or break, the toggle joint formed by the two links 7 and 8, depending upon the direction of movement of-said slide, and a corresponding vertical movement of thedie-slide 3 will result. The two slides '3 and l2'being made substantially equal in weight, balance one another, so that only a relatively small amount of power is required to operate the die-slide, despite the fact that, in a press of this type, the latter is usually avery heavy member. 7

Moreover, by use of the oscillatory link 15 to support the intermediate pivotal connec- 7 tion between the two links 13 and 14 that connect the operating-slide with the toggle, it will be observed that'the latter of said links is caused to move in a substantially horizontal line at all times, and thus apply the pressure exerted by the operating-slide g in the most effective fashion to such toggle, whether for opening or closing the same.

The operating-slide 12 may be reciprocated by any suitable means, those shown in F igs. 1 and 2 being typical merely. As

7 there illustrated, a crank-shaft 17 driven by means of gears 18 and 19 from a pulley shaft 7 with a face normally bearing against a block 24: on the end of the pitman, as a result of which it willv be seen that by simply throwing up said arm the pitman is allowed to reciprocate Without effecting any movement of the slide.

By counterbalancing the die-slide and op{ erating-slide in the fashion exemplified in the machine just described, smoothness and ease of operation are secured in a degree possible with prevailing designs of press mechanism. At the same time the arrangement of the toggle, and of the links connecting the operating slide therewith,is such as to utilize most advantageously the power applied to said operating slide. VVithal, the machine is of simple and compact construction, occupying relatively small space and having the driving mechanism as Well as the die slide readily accessible. I p 7 Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention v 1. In mechanism of the character described, the combination of a Vertically movable die slide, toggle mechanism connected thereto for operatingthe same, and a secondslide movable inadirection at an acute angle to said die slide, said toggle mechanism being also connected. to said second slide and being operated by movement of the same, and said second slide being constructed to counterbalance said die slide.

2. In mechanism of the character described, the combination of a vertically movable die slide, toggle mechanism connected thereto forv operating the same, a second slide movable in a direction at an acute angle to saiddie slide, said toggle mechanism being connected to said second slide and being operated bymovement of the same, and said second slide being constructed to counterbalance said die slide, a rotatable shaft, and means operated by said shaft and adapted to reciprocate said second slide.

In mechanism of the character described, the combination of a vertically movable die slide, toggle mechanism connected thereto for operating the same, a second slide movable in a direction at an acute angle to said die slide, said toggle mechanism being connected to said second slide and being operated by movement of the same, and said second slide being constructed to counter-balance said die slide, and a rotatable crank-shaft operatively connected with said second slide.

4. In mechanism of the character described, the combination of a vertically movable die slide, toggle mechanism c0nnected thereto for "operating the same, a

second slide movable in a direction at an acute angle to said die slide, said toggle mechanism being connected to said second slide and being operated by movement of the'same, and said second Sl1d8 b61ng'COI1 structed tocounterbalance said die slide, a continuously rotating crank-shaft normally operatively connected with said second slide,

and means adapted todisconnect said crankshaft from said last-named slide. 7 p

5. In mechanism of the character ;described, the combination of two slides movable in different directions at an angle to each other and constructed to exert the same vertical pressure tofcounter-balance each other, toggle mechanism connecting said slides, and means adapted to rec procate one of said slides, thereby also actuating the other V p,

(SQIn mechanism of the character described, the combination of two slides "movable in different directions at an angle to each other and constru'ctedto exert the same vertical pressure to counter-balance each other,'one of sa d slides being adapted to receive a die, toggle mechanismconnecting said slides and adapted to multiply'pressure exerted bythe other 'offsaid ,slides.in i transmission tosuch d e receivlng slide, and

means for reciprocatin such other slide.

7. In mechanism of the character'described, the combination of a vertically movable die-slide; a counter-balancing operating-slide movable on a line inclined tlo the path of movement of said die-slide; and means connect ng said slides, includlng toggle-links supporting ,die-slide and two other links "connecting said operatingslide with 'said' aoggle links.

8. In mechanism of the character described, the combinationof a vertically movable die-slide; a counter-balancing operating-slide movable on a line inclined to the path of movement of said die-slide; and means connecting said slides, 1 including toggle-links supporting said die-slide, two other links connecting said. opcrating slide with said toggle li'nks, and means controlling the movement of said other links.

9. In mechanism of the "character de scribed, the combination of a vertically movsaid other links at the point of their pivotal able die-slide; a counter-balancing operatconnection, whereby the one attached to said ing-slide movable on a line inclined to the toggle-links is caused to move in a substanpath of movement of said die-slide; and tially horizontal direction. 5 means connecting said slides, ilngluding Signed by me, this 12th day of June, 1916. 15

to le-links su ortin said die-si e, two oth r pivotally gonnecid links attached to JOHN BLAKESLEE' said operating-slide and the other to said Attested bfi toggle-links, and a lever oscillatory about a Tnos- FAY,

l0 relatively fixed axis and connected with D. T. DAVIES. 

